Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 22.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/25/2018   06:58:22   ( -70.13,-108.14) 01/25/2018   06:57:45  ( -70.13,-108.19)    1.87                37
 01/25/2018   07:47:49   (  70.03,  59.36) 01/25/2018   07:48:29  (  70.01,  59.30)    3.31                40
 01/27/2018   22:25:13   (  70.54,-159.30) 01/27/2018   22:24:02  (  70.56,-160.41)   41.22                71
 01/27/2018   23:14:49   ( -70.10,   7.69) 01/27/2018   23:14:37  ( -70.11,   7.62)    2.97                12
 01/28/2018   00:04:17   (  69.94, 175.11) 01/28/2018   00:05:20  (  69.93, 175.19)    2.97                63
 01/30/2018   14:41:47   (  70.17, -43.96) 01/30/2018   14:40:48  (  70.17, -44.02)    2.59                59
 01/30/2018   15:31:17   ( -70.06, 123.52) 01/30/2018   15:31:29  ( -70.03, 123.51)    2.73                12
 01/30/2018   16:20:54   (  69.40, -69.74) 01/30/2018   16:22:03  (  69.38, -68.23)   59.15                69
 02/02/2018   06:58:15   (  70.12,  71.86) 02/02/2018   06:57:40  (  70.10,  71.86)    1.76                35
 02/02/2018   07:47:45   ( -70.01,-120.66) 02/02/2018   07:48:22  ( -70.02,-120.69)    1.32                37
 02/04/2018   22:25:08   ( -70.62,  20.83) 02/04/2018   22:23:58  ( -70.68,  19.43)   52.15                70
 02/04/2018   23:14:43   (  70.07,-172.33) 02/04/2018   23:14:33  (  70.09,-172.34)    2.63                10
 02/05/2018   00:04:13   ( -69.96,  -4.84) 02/05/2018   00:05:14  ( -69.95,  -4.81)    2.07                61